Lubricating system for explosive-engines.



A. WEIL/IND. LUBRICATING SYSTEM FOR EXPLOSIVE ENGINES.

APPLICATION FILED APR. I9, 1913.

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l ALFRED WEILAND, 0F READING, PENNSYLVANIA.

Specification of Letters Patent.`

LUBRICATING SYSTEM FOR EXPLOSIVE-ENGINES.

Patented Oct. 31, 1916.

Application iiled April 19, 1913. Serial No. 762,190.

To all whom it may concern:

Be it k'noivn that I, ALFRED IVEILAND, a'

citizen of the United States, residing in the city of Reading, county of Berks,'State of Pennsylvania, have invented a new and useful Lubricating System for Explosive-Engines,'of which the following is a specification.

This invention relates to a lubricating system for explosive engines, and has for an object to provide a system in which the oil is supplied to the engine in quantities proportional to the demands or load conditions of the engine.

It has, as further objects, toleliminate gummy oil deposits in the engine cylinder or on-'the piston, to economically control the supply of lubricating oil, thereby reducing materially the operating expense and to avoid excessive oil mingling with the exhaust products and discharging-by Way of the muliler to the atmosphere. y

It has heretofore been supposed to me.-

chanically or manually regulate the oil supy ply in accordance with the load conditions of the engine, but such means have not only been demonstrated as unsatisfactory and unreliable, but in addition, claim the almost constant attention of the operator, thereby adding complications which should be avoided, if possible.

In my present system', I have devised a construction wherein the oil supply is automatically controlled, varied and regulated in accordance 'with the changing pressure conditions Within the engine and the quantity of oil supplied to the engine varies in direct proportion to the demand of the en- It further consists.of other novel features of construction, all as will be hereinafter fully set forth. v

For the purpose of illustrating my invention, I have shown in the accompanying drawings one formthereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood thatl the various instrumentalities of which my invention consists can be variouslv arranged and organized andcthat my invention is not limited to the precise ar'- rangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents a side elevation, partly in section, of a portion of an explosive eng1ne, showing the lubricating system embodying my invention. Fig. 2 represents a vertical section of a regulating valve used 1n my novel system.

S1m1lar numerals of lreference indicate corresponding parts in the figures.

Referring to the drawings -1 designates the casing of an explosive engine, having formed therein, the cylinder 2, containing the reclprocating piston 3, which is joined by the connected rod 4 to the crank-shaft 5. In the present instance, the crank-shaft 5 is suitably bored to form a conduit or passage 6 leading, as shown by the arrow, to the piston rod connection-in order to deliver oil to the interior of the cylinder for lubricating purposes, as will be readily understood. The conduit 6 has communication by Way of the pipe 7, with thedischarge pipe 8 of an oil pump 9, preferably of the gear driven type,

'which is located at a suitable point, for the purpose of circulating the oil to the parts of the engine.

10 designates the inlet of the pump 9, having connection with a pipe 11, leading to andl communicating with an .oil supply reservoir or chamber 12, located in the bottom of the crank-case 13, and separated from the main oil supply, in the crank-case chamber 14, by a Wall o r partition 15, having an opening 16 to' permit free passage of the oil to the chamber 12. This latter chamber 12 contains a strainer 17 or like oil separating device, so that the oil drawn to the pump is free from dirt or sediment collected by the oil in its travel through the engine.

18 designates a cap plug which serves to permit access to the chamber 12 so that the strainer 17 may be removed for purposes of cleaning or the like.

19 designates a valve ncasing provided With a port 20 communicating with the oil pump discharge pipe 8 at a point adjacent the connection of the latter with the conduit 7, so

the various parts ofthe engine or be bypassed by Way of the conduit 20 to the casing 19. Thiscasing 19 is'provided Withan `outlet port 21 connected to and communicating with a return pipe 22, the discharge end of which enters the crank-case 13 and returns the oil to the main reservoir. It will,

that it is lconducted directlyto the main Vres- 23, or like connectors, are utilized, where necessary, to connect adjacent pipes or conduits.

head 26, located inthe enlarged tubular headA 27 of the casing 19 and forming a seat for one end of a spring 28, the opposite end of which bears against the cap 29, which serves as a closure for the end of the head 27 The connection between the cap and head is preferably by threading the respective parts, as shown at 30. The cap 29 is of annular form to receive the threaded end 31 of a pipe 32, which leads to.the gas inlet chamber 33, where it'is conneotedto the casing 1 by a suitable nipple 34 and union 23. The explosive mixture is drawn to the gas inlet chamber by way of the intake pipe 35, which is, of course, in communication with the carbureter (not shown) andthe supply of mixture is controlled, as usual, by a throttle valve 36 located at a suitable point.

37 designates the inlet valve controlling the admission of the gas to the compression chamber 38 in the ordinary manner. 39 designates a pipe leading from the discharge end of the lubricator pump 9 to a gage 40, which is located at a convenient point, so that the pressure and operation of the lubricating system may be observed.

y41'designates a relief port forming a communication between the conduit 21 and the space 42 at one side of the follower 26, so that the plunger valve may freely operate -under the spring pressure, and be relieved of fluid pressure atthe necessary times.

lows z--When the engine is operating underload conditions with the throttle 36' *wide` open, the vacuum in the gas inlet 33 is low-HY vered and consequently, reduces the lsuction upon the plunger valve 24,.so that the spring" 28 causes the valve to close so that they oil from the pumpk cannot pass by way of 'the conduit or by-pass 20 to the return pipe 22, but is forced through the conduit 7 to the Various oilV passages in thecranksand c0111 nectlng rods and lubricates the engine When, however, the engine is operating on a decreased load andthe throttle is closed or part1ally closed, the Vvacuum in the inlet chamber 33 is 'correspondingly raised and the plunger valve 24 is forced upwardly against the tension ofthe spring 28 and opens ,the port 25. This action by-passes a quantityof the oil to the return pipe 22, so

ervoir 14, while only a portion passes to the engine. It will therefore be apparent that the supply of oil to the engine is regulated in accordance with the pressure conditions existing in the gas admission chamber, and the oil is supplied practically in direct proportions to the demand of the engine.

. In actual operation of the device, it will be apparent that the port 25 is seldom opened or closed for any considerable period, since the varying conditions within the admission chamber 33 cause the plunger 24 to move upl anddown, and the valve therefore may be called a floatingvalve, which continually varies thesupply of oil to the engine.

ersing a level road with a light load, at say a speed of 15 miles an hour, the throttle will be practically' closed andthe vacuum in the admission chamber increased, so that the plunger valve 24 ris partiallyor completely ing a lowering of the vacuum in the admission chamber, so that the pressure conditions on opposite sides of the plungervalve follower 26 are more'nearly balanced, and the spring 28 causes the plunger to entirely out ofl" or ymaterially reduce the by-pass port 25,

,so that more oil passes by way of the pipe 7 to the parts of the engine. y

It will now be apparent that I have devised a complete unitary lubricating system, wherein the supply o f oil to thev engine is varied in accordance with the demand made upon the engine and, at no time, will Vthere be an excess of oil within the engine. The operation of the device vis asV fol-j novel regulating means, I supply to the engine a quantity'of oil always sufficient to'lubricate the parts, but not suiicient to gum the cylinder or piston or causing a quantity of oil-to bevburned in the exhaust, which thereby avoids sooty deposits in the muffler and obnoxious smoke Vfrom being discharged to the atmosphere.

Itwill now be apparent that I have devised a novel and useful construction of a lubricating system for explosive engines, which embodies the features of advantage enumerated as desirable in the statement of the. invention, and the above description, and whlle. I have, in the present instance, Ashown and described a preferred embodi- ,Y its advantages.

Thus, for example,` if the'engine is used in an automobile and the lattel'ii's trav- :asA

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. InA a device of rthe character stated,

an explosive engine, a gas admission chamber therein, a pump connected with said engine for supplying lubricating oil thereto, a source of oil supply, a by-pass from the discharge end of said pump connected to said source of supply, and means controlled by pressure conditions Within said gas chamber for controlling the operation of said by-pass.

2. In a device of the character stated, an explosive engine, a gas admission chamber therein, a pump connected with said engine for supplying lubricating oil thereto, a source of oil supply, a by-pass from the discharge end of said pump connected to said source of supply, a valve for controlling said by-pass, and means controlled by pressure conditions Within said gas chamber for opening and closing said valve.

source of oil supply, a by-pass from the discharge end of said pump connected to said source of supply, a valve for controlling said by-pass, pressure means controlled by conditions Within said gas chamber for.

moving said valve in one direction, and

means for moving said valve in the opposite direction.

4. In a device of the'character stated, an explosive engine, a source of oil supply, a pump for supplying oil to said engine, and means, controlled by pressure conditions in said engine, for regulating the amount of oil discharged from said pump to said engine and back to said source of oil supply.

ALFRED WEILAND. Witnesses C. D. MoVAY, F. A. NEWTON. 

